Michigan

This page serves as the primary resource for editors of Michigan. Review all the sections to better understand how the guidelines for this state might deviate from the overall USA or worldwide guidelines. If you have any comments or questions about this page or state refer to the community links below.

Introduction

Mapping resources

Before editing the maps in Michigan, be sure to fully review and understand the editing manual.

The Waze user community follows the Waze etiquette guidelines discussed in the Wiki. Be sure to familiarize yourself with these guiding principals while editing the maps and this Wiki, as well as when communicating with other Waze users.

Statewide

MDOT NFC Maps - MDOT National Functional Classification (NFC) maps by county and urban area. An effort was started in late 2013 to convert metro Detroit and other major cities to their corresponding NFC road classifications.

Major roads

County Highways versus County Roads

Michigan has an "intercounty" highway system in addition to locally maintained county roads. In both cases, naming conventions should follow highway naming by state.

Numbered county highways are prefixed with A through H based on geography. Naming convention should be "CR-[Letter Prefix][#]" (i.e. "CR-D19"). In all cases, local signage should be used to designate a primary name, while the county highway designation could be an alternate name if appropriate. While these roads could conceivably be classified higher, the lowest road type used should be Minor Highway regardless of appearance or functional classification.

A small number of counties maintain numbered county roads that are not part of the statewide A-H highway system. These roads should be named CR-[#] (i.e. "CR-388") and would typically appear as Primary Street, Street, or even Dirt Road.

State Numbered Highway Naming

The following proposal for a new national state highway naming standard is currently under review by the GLR State Managers.

Primary Street Name: Use whatever name is in common usage in that area. (Check business addresses, GIS, etc).
If the commonly used Primary Street name is not the state's Numbered Highway name (Example: M-59), include an alternate street name with the Numbered Highway name.

When to include a City Name on a State Numbered Highway:

Freeways

Primary Street Name: No City Name

Alternate Street Names: No City Names

mH/MH Numbered Highway

divided roadway with limited access:

Primary Street Name: No City Name

Alternate Street Names: No City Names

all other mH/MH Numbered State Highways

Primary Street Name: Include a city name in locales that use city names.

Alternate Street Names that use a state Numbered Highway name (Example: M-59): No City Name

Functional Classification

Michigan follows the Waze Functional Clasification (FC) standard for determining what Road Type to use for all paved roads. Public unpaved roads (gravel or dirt) will always use the Dirt Road / 4X4 Trail Road Type, even if the FC for that road segment is higher than "local". (Dirt is always dirt.)

Special roads

Drivable roads

Michigan follows the standard USA guidelines for all of the following special road types.

Michigan speed limits on dirt roads

"Absolute" & "Prima Facie" Speed Limits

The Michigan Motor Vehicle Code allows for "absolute" and "prima facie" speed limits. Absolute
speed limits are supported by traffic control orders issued by the Michigan State Police and are posted on signs along the road. On roads where there is no posted speed limit, or on gravel/unpaved roads, the speed limit is known as the "prima facie" speed limit. Prima facie
speed limits are subject to driver judgment of driving conditions. If there is a posted speed limit on a gravel road, this is the maximum for optimum conditions, and drivers are expected to drive at lower, suitable speeds when conditions are less than optimum.

Prima Facie Speed Limits

In 2006, the Michigan legislature changed the restrictions for prima facie speed limits, limiting the locations that qualify for posting at 25 miles per hour. The revised law now requires the following speed limits:

25 miles per hour in a business district. The law defines a business district as "an area contiguous to a highway where the total widths of the adjacent buildings in use for commercial business open to the general public on both sides occupy 50 percent or more of the total frontage on both sides for a distance of 600 feet or more."

25 miles per hour for all roads in platted subdivisions.

25 miles per hour on a road with 60 or more vehicle access points (side streets, driveways, private roads, etc.) within a half mile.

35 miles per hour on a road with 45 to 59 vehicular access points within a half mile.

45 miles per hour on a road with 30 to 44 vehicular access points within a half mile.

55 miles per hour for all other roads with no posted speed limit. This is known as the "general speed limit."

(DRAFT) Median U-Turn Intersection (MUTI)

NOTE: Although these guidelines have not officially been adopted as a Waze standard, the discussion is occurring at this forum thread. This section is in place as a guide for editors experimenting with this type of intersection while a consensus is being reached statewide or country-wide.

A Median U-Turn Intersection (MUTI) is a procedure involving an indirect left turn onto or from a split roadway onto another road where the direct left turn is prohibited at the intersection itself. A MUTI can only occur at the intersection with a cross street. Other median u-turns may be available at crossovers along a split road, however these would not be classified as MUTI since they simply facilitate going the opposite direction along the same split road. A reference figure showing both types of u-turns together appears below.

To execute the turn, the driver proceeds through the intersection to turn left at the next median u-turn, then turns left onto the same road (in the opposite direction), and finally turns right at the main intersection. Alternatively, if the intersection involves turning onto a split cross road, the driver could also turn right onto the intersecting split road, then turn left at the median u-turn, finally turning left onto the road and proceeding through the main intersection.

This procedure has proliferated in Michigan since the late 1960's, and is locally referred to as a “Michigan Left Turn (MLT)” or just “Michigan Left“, even in locations other than Michigan. The MUTI and its variants are now used or being considered in several states and other countries.

Other terms for this procedure in transportation literature from the Federal Highway Administration and individual states include:

Although this departs from traditional rules for At-grade connectors and for use of the ramp road type, it hides the instructional street name in the client. It is close to the exception stated on the at-grade connector page, however, in that a MUTI is a signed--though unnumbered--exit from the current direction of travel on a roadway.

Junction Angles: Between 45 and 90 degrees

The angles for the median u-turn should generate two "turn left" instructions. The first “turn left” should occur prior to entering and the second should occur while exiting the median crossover.

Junction Position:

The initial junction ideally should be as close to the start of the solid white line as possible (if present). This prevents a turn instruction from occurring too early or too late. In many cases, this will require adding a geometry node at the start of the segment at the most detailed zoom level to generate the correct turn angle.

Sample MUTI as it appears in Waze Map Editor:

Distinction between MUTI and standard crossovers:

Alleys

As a general rule in Michigan, only residential alleys should be mapped, and only if they are the locally accepted destination for parking at or near a residence. Alleys should only function as a starting point or final destination, not as a thoroughfare. If alleys are mapped, the road type should be set to "Parking Lot Road" and given the name "Alley". Other attributes (city, direction, turn restrictions) should be set as if the alley were any other drivable road.

When adding or editing an alley, an important consideration is to verify that house numbers are properly situated for the surrounding street segments. Waze will route to the closest segment for a set of destination coordinates. This may result in the destination being in the alley, which may or may not be the desired result. Refer to the FAQ for additional information. If you need guidance or are uncertain whether a certain alley would meet the criteria to be mapped, please post a permalink in this existing Michigan forum thread.

Parking Lot Roads

The following proposal for a new national standard setting a minimum length for dead-end parking lot roads is currently under review by the GLR State Managers.

Specific Michigan Place lists and Standards

Cameras

Not every camera-looking device at an intersection is a speed or red light camera. Generally speaking:

a speed camera takes a photograph of a vehicle when it passes by the camera at too high a speed.

a red light camera takes a photograph of a vehicle that enters an intersection after the light is red. In some areas, it takes the photograph when a vehicle is not clear of the intersection some period after the light turns red.

For spreadsheets above, comments can be inserted, but edits are locked. Send a PM to SkiDooGuy for editing access.

Area Managers

The table below identifies the editors also designated as Area Managers or higher who are editing in Michigan. If you have any questions, please consider contacting them directly as needed. If you are an Area Manager that covers Michigan, or a USA Country Manager that does a lot of work in Michigan, please add yourself to this list (alphabetical by username) in the correct rank section.

The editor who also serves as the Regional Coordinator for Michigan is automatically listed at the top of the table. That editor may not be highly active in this state and therefore may not be listed separately in the table.